1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7270b00a686dfe8dd3fbd4c8409effe83f96ebfeba6d9b532179df76f7640e8f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14deddcf-1106-4c98-82a0-915574cfdfe7.json and https://artists.proofprofile.net/proofs/artist/14deddcf-1106-4c98-82a0-915574cfdfe7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nailed To The Road [Music From Original Film Soundtrack: War Of Words]
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaede21eeaad4f47ad28647605196956d61125ac74916ddca04e8076b1a3893a2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFM80722001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac97f2e3c6f69a3b15c10722ef58581f274fb4c0952b1c7a8c46bdc75ae9a222. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFM80722002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e82e13fdfd25b393c8a47206e318b37eba8dd6105f7246aa59235d560f3252. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFM80722008.
A Small Deadly Space [Remixed & Remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e38c24dd15fa7512919f2c1bfa552636fb5ca0800becf586d0c5428539b874. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:42:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFM80711001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6121930c8dbc39b0bb2aa69779908d38742cf55f4b3f12dcef184d24846821c7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFM80711002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80434fa002f175b28d92ded8ae00cec86babc381d4fcda5ab9f93fff114ebf1b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFM80711005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3294cc353ddd1de14ed3bf170e37a71d8c80d4dad94d6344075e362581fd2f57. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10020662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ae2b71e90fc8f17a9b15221e8905ac3b3fb6464f1567a0990ff7fabadab6a3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10025404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4451cb1a43398cdf7b184d8394502af199836ed9a9646ea75c917da9ac876721. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10020663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9829fff92aa0304f880f768770f4463dc8483b72e580a844d80ecdaa607b6be. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10020664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e1e4a8b039cbfd492a051191317c12ec2ce62574f6d5a05c1cd447cf88e861. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10020665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1a6dca49f24b84e35b6ed67102073ca6e1f4b07f2c84bc79408756296651b1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10020661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce07f846eeef40c2db6b1618227b0d2ef0fc586ec62ed2cc6939dbe05b6006e8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10025451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd6921945714954fcc47f645162861f3ad387b7ab542930502aabfefb5e4ab7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10020655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb416593f615735b68c7e54a030f7831eeea4f062fca6599fcfe44171641d712e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10020656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ac285570407739a29782844fe0c04d92b2a44bec9d57f07c262105534d502a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10020657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5287028106786c93ead537c6ce3c92b9da0af4ec77a75fdde841d9ca3f96bd3d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10020658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3de3af403316ff162ac84ab1c59c7aab5cc1b786427c9bf6de7fa64baf29bb7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10020659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce81b807cae18c5506e4be7efbda420bb2f685ea1f32499475718e45f43dda17. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb93e334a4501b6f247441b9ae324aa4552af10d8119f4c2ddc520ac4abb1d0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10024900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66dbece0c7535aad474f058cb2fa7baaeaa1624eff3b202a74a2ea621caca24c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQX91500221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ce00c843fd6148cde121b47854ca75bc5338c53a515b43883b335f4040b1f4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQX91500222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac506ba13359edc691aac154751dc282df9c319c1f44d0a4e8a234fe51ecc82. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQX91500223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e69a26b9316a64e172df902e9c537541a99ad070494af9b191bab6ee92d24f3. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQX91500226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636e44b74ebd38315f496ec490d51caf55b7ad3728378ae4367008907663fa85. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQX91500227.